Bonneville America Forums Forums General Motorcycle Forums Vendors Only Wiseco 988cc Big Bore 1/4" Stroker Kit

And that's with 13.5:1 compression vs the 10.5:1 compression of the regular stroker kit. So you can expect less hp and torque if you have it done. IMO the cost isn't worth it, but a lottery winner might go for it. Looks like us commoners will just have to be satisfied with the 904 Big Bore.